Search for Majorana Neutrinos in B[superscript −] → π[superscript +]μ[superscript −]μ[superscript −] Decays
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Aaij-2014-Search for majorana neutrinos.pdf
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Author(s)
Counts, Ian Thomas Hunt
Williams, Michael
Ilten, Philip J
Date Issued
April 2014
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, et al. “Search for Majorana Neutrinos in B[superscript −] → π[superscript +]μ[superscript −]μ[superscript −] Decays.” Physical Review Letters 112, no. 13 (April 2014). © 2014 CERN, for the LHCb collaboration
Version
Final published version
Abstract
A search for heavy Majorana neutrinos produced in the B[superscript −] → π[superscript +]μ[superscript −]μ[superscript −] decay mode is performed using 3 fb[superscript −1] of integrated luminosity collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV at the LHC. Neutrinos with masses in the range 250 to 5000 MeV and lifetimes from zero to 1000 ps are probed. In the absence of a signal, upper limits are set on the branching fraction B(B[superscript −] → π[superscript +]μ[superscript −]μ[superscript −]) as functions of neutrino mass and lifetime. These limits are on the order of 10[superscript −9] for short neutrino lifetimes of 1 ps or less. Limits are also set on the coupling between the muon and a possible fourth-generation neutrino.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.112.131802
